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Nb Model.) 8 Sheets-Sheet 1.

W H WALLS STREET SWEEPER.

No. 518,168. Patented Apr. 10, 1894.

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STREET SWEBPER.

No. 518,168. Patented Apr. 10, 1894.

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Patented Apr. 10, 1894.

(No Model.) 8 Sheets-Sheet 6.

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STREET SWBEPER.

No. 518,168. Patented Apr. 10, 1894.

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V STREET SWEBPBR. No. 518,168. Patented Apr. 10, 1894.

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No. 518 Patented Apr. 10,1894.

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UNITED STATES I PATENT OFFICE.

WILLIAM H. WALLS, OF ST. LOUIS, MISSOURI, ASSIGN OR OF ONE-HALF TOMICHAEL BECKER AND HENRY MUELLER, OF SAME PLACE.

STREET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 518,168, dated. April10,1894.

Application filed September 13, 1 893. Serial N0.485,748- (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. WALLS, of

'St. Louis, State of Missouri, have invented certain new and usefulImprovements in a Combined Street Sweeper and Loader, of which thefollowing is a full, clear, and exact descriptlon, reference being hadto the accompanying drawings, forming a part hereof.

My invention relates to improvements in street sweepers and consists inthe novel arrangement, combination and construction of parts as will bemore fully hereinafter described and designated in the claims.

' In the drawings: Figurel is aplan view of my lmproved sweeper, partsbeing broken away to more clearly show the same, and Fig. 2 1s a sideelevation of the same. Fig. 3 is a front elevation more clearly showinglevers which use in carrying out my invention. Fig. 4 1s a rearelevation more clearly showng the mechanism of my invention. Fig. 5 s alongitudinal sectional elevation. Fig. 6 is an enlargeddetail'perspective view of the smaller brush and a lever which I use toelevate said brush. Fig. 7 is an end elevation of one of the brushes andFig. Sis a crosssection of the same. Fig. 9 is a longitudinal centralsection of one of the brushes. Fig. 10 1s a detail side elevation of oneof the levers whichI use to throw. the brushes in and out of gear. Fig.11 is an enlarged detail perspective view of a portion of a curtain andan endless conveying-belt which I use in car-- rying out my invention.Fig. 12 is a cross section of a curtain showing its connection with thecover of a rotating conveyor. Fig, 13 1s a longitudinal central sectionof the cover showing the rotating conveyor located therein.

The object of my invention is to provide a streetsweeper with a seriesof revolving brushes, the aggregate length of which will becomparatively great, so that a comparatively wide surface may be sweptby a single passage of the machine thereover, and which shall deliverthe accumulated sweepin gs into an adjacent receptacle, whence they maybe readily dumped at a convenient point.

1 indicates the front and 2 the rear wheels, the traction-wheels 2 beingloosely mounted on a shaft or axle 3 which is circular in crosssectionand the front wheels being mounted on an axle 4 in the ordinary way.Mounted on these axles is a frame 5 which is constructed of two parallelside timbers 6 and 7 and a front end timber 8 which is connected to theaxle 4 by a king-bolt 9. The rear ends of the timbers 6 and 7 areconnected to the shaft 3 by straps 10 which are. bent so as to conformto the contour of said shaft and their ends are connected to the ends ofsaid timbers by bolts 11. By this construction the shaft, 3 can rotatein the bearings thus formed. The traction-wheels 2 are connected to theshaft 3 by a ratchet wheel 12, which is rigidly connected to the saidshaft, and aspring actuated pawl 13, which is connected. to the wheels.By this construction when the sweeper moves forward it will rotate saidshaft.

14 indicates a timber which is located on and halved into the timbers 6and 7 about half way intermediate their ends. The ends of this timberextend asuitable distance outward from the timbers 6 and 7 forthe-purpose hereinafter mentioned.

A part of the frame 5 is covered with flooring 15 with the exception ofits rear end, which is cutaway to allow an endless conveying belt tomove therein.

Mortised into the timbers 6 and 7 adjacent their rear ends and extendinginwardly therefrom is a timber 16. 7 Connected to the top of this timberand extending rearward over the axle 3 and parallel with the sidetimbers 6 and 7 are two additional timbers 17. Feathered on the shaft 3by feathers 18 are two bevelgear wheels 19 and 20 which are providedwith annular projections 21 and 22. These projections are provided withcollars 23 which engage grooves in said projections. Connected to thesecollars 23 and extending up-- wardly therefrom is a bar 24. There beingtwo of these bars I will describe but one of them. The bar 24 is bent soas to engage bearings 25 connected to the upper side of the timber 17,and extends upwardly a suitable distance therefrom to allow a lever 26tobe connected thereto by a rod 27. The lower end of this lever is pivotedto an car 28 which is formed on or fixed to the side of a commonsegmental rack 29 which is connected to the fioor of the sweeper and thepurpose of which is to hold said lever in different adjustments. Mountedin bearings which are located on the under side and adjacent the rearends of the timbers 17 is a horizontal shaft 31. which carries a roller32 said roller being rigidly connected to the shaft. Connected to thisshaft adjacent the bevel gear-wheel 20 is a gear-wheel 33 which mesheswith a gearwheel 34 located on the projection 22 and adjacent the bevelgear-wheel 20.

35 indicates a roller which is located under the frame 5 and parallelwith the roller 31, their ends being in alignment with each other. Thisroller 35 is held in position by bearings 36 which are connected to thetimber 14 and extend downward and engage the ends of said roller, thusholding it in position. on these rollers 32 and 35 is an endlessconveying belt 37 which carries parallel cross ribs 38.

Meshing with the gear wheel 20 is a side gear-wheel 39 which is mountedon one end of a horizontal shaft 40 which is mounted in bearings 41which is connected to the free end of the timber 16 which is connectedto the timber 7, the opposite end of said shaft being provided withbearings inthe timber 7. The shaft 40 runs at an oblique angle relativethe timber 7. There are two of these gearwheels 29 and two shafts 40;they being substantially the same and operate in the same manner, thedescription and operation of one will be omitted.

42 indicates a horizontal shaft which is located under the frame 5 aboutmidway its center and is parallel with the shaft 40. This shaft 42 isheld in position by bars 43 and 44, one end of the bar 43 pivotallyengaging the shaft 40 and the opposite end pivotally cngaging one end ofthe shaft 42. One end of the bar 44 is pivotally engaged by cars 45which are connected to the inner side of the timber 7, the opposite endof said bar being pivotally connected to the shaft42. Located on theshaft 42 between the bearings 43 and 44 is abrush 46. By the shaft beingmounted in bearings as hereinbefore described, the brush 46 can bereadily raised up from the ground by means of a lever 47. The lever 47is pivoted at its lower end to bearings 48 which are connected to theupper side of the floor 15 and a segmental rack 49 is located adjacentthe lower end of the lever so that a spring actuated pawl 50 will comein contact with said rack. Connected to the lever 47 a suitable distanceabove the segmental rack is a rod 51 which extends outward from saidlever and in alignment with the shaft 42, the outward end of whichengages the upward projecting end of an angle-iron 52. This angle ironis provided with bearings 53 which are connected to the upper side ofthe floor 15. T he end of the horizontal portion 54 of the angle iron 52is engaged by two downwardly projecting links 55 and 56, the lower endsof which engage the adjacent ends of tilting bars 57 and 58. The bar 57is ful- Mounted crumed to a bearing 59 located on the under side of thefloor 15. The tilting bar 58 1s fulcrumed to a bearing 60 which islocated on the underside of the floor 15. When the brush is down thesebars are in alignment with each other. The outward projecting ends ofthe bars 57 and 58 are provided with chains 61 and 62, one beingconnected to each bar and extending downwardly and engaging the outwardprojecting ends of the shaft 42. By this construction the lever 47 beingindirectly connected to the angle iron 52 when the lever is moved in therequired direction it will push downwardly on the portion 54 of theangle iron 52, thus raising the brush from the ground.

Located on the shaft 42 ad acent one end of the broom 46 is asprocket-wheel 63 wh1ch is engaged by a sprocket chain 64 which engagesa sprocket-wheel 65 which is connected to the shaft 40.

66 indicates a brush which is parallel with the brush 46 and located asuitable distance in the rear and at one side of the brush 46. Thisbrush is held in position by bars 67 and 68. A shaft 69 which carriessaid broom projects outward a suitable distance from each end. One endof the bar 67 is pivotally connected to the end 70 of the shaft 69 andextends upwardly and is pivoted in bearings 71 connected to the lowerside of the timber 7. One end of the bar 68 is pivoted to the end 72 ofthe shaft 69 and the opposite end IS loosely mounted on the shaft 40. U

73 indicates a lever which is pivoted at its lower end and constructedwith the usual segmental rack '74. This lever and segmental rack arelocated on and connected to the upper side of the floor 15 over the end72 of the shaft 69. Connected to the lever 73 asuitable distance abovethe segmental rack is a rod 75 which engages the upward projecting end76 of an angle iron 77. The angle iron 77 is pivoted in bearings 78which are connected to the upper side of the timber 14 adjacent itsouter projecting end. Connected to the horizontal projecting end 80 ofthe angle iron 77 are two downwardly projecting links 81 and 82, thelower ends of which engage the adjacent ends of tilting bars 83 and 84.These bars are in alignment with each other and the bar 84 is fulcrumedin a bearing 85 which is connected to the lower s de of the timber 14adjacent its end. The tlltlng bar 83 is fulcrumed in bearings 86 whichare connected to the lower side of the floor 15. These bars areconstructed so their outward projecting ends are over the ends 70 and 72of the shaft 69. Connected to the outerprojecting end of the bar 84 andextendlng downward and engaging the end 70 of the shaft 69 is a chain87. Connected to the outer projecting end of the bar 83 and extendingdownward and engaging the pro ecting end 72 of the shaft 69 is a chain88. By this construction when the lever 70 is moving in the requireddirection, the brush 66 can be elevated from the ground. Connected tothe'end 72 of the shaft '69 is a sprocket wheel 89 which is engaged by asprocket chain 90 which engages a sprocket wheel 91 connected to theshaft 40.

92 indicates a screw conveyor which is mounted on a shaft 93. Thisshaftand conveyer are mounted in a casing 94. One end of the shaft isprovided with its bearings in the end 95 of said casing, the casingbeing of such a size that the screw conveyer will rotate therein and itforms a bearing for said screw conveyor. The outward projecting end 96of the shaft93is constructed with a sprocket wheel 97 which is engagedby a sprocket chain 98 which engages a sprocket wheel 99 connect- 5 edto the end 70 of the shaft 69. The casing 94 is so constructed of apiece of fiat metal that when it is bent one edge will project outwardfrom the opposite edge and form an openin 100 between said edges. Thecasing 94 and its connections are located above and a little to thefront of the brush 66. The casing is held in position by eyes 10l and102 which are connected to the top of said casing. The eye 102 isengaged bya rod 103 which extends upward and engages an eye located onthe under side of the timber 7. The eye 101 is engaged bya rod 104 whichextends upwardly and engages an eye located on the under side of thetimber 7. Connected to the projecting edge 105 of the casing 94 is acurtain 106 which is of such a length that it extends downward in frontof the brush 66. The conveyor 92 and the casin g 94 extends outwardlyover the lower end of the endless conveying belt 37 so that when dustand the like is discharged from the opening of said casin it will fallon the endless conveyer. a

107 indicates'a brush which is the same in construction as the brush 66and is located on the opposite side of the sweeper from said brush 66and at right angles therewith. This brush and its connections being thesame as the brush 66 Iwill omit the description thereof. l he brushes46, 66 and 107 being the same in construction, I will describe but oneof them.

103 indicatesa roller which is provided with a series of grooves 109formed longitudinally 1n the outer periphery of said roller. By theconstruction of these grooves there are formed pro ections 110.

111 indicates a bar which is of the same length as the roller 108.Located on this bar is a suitable number of V-sha'ped strips 112.

. These strips are held in position with the bar 111 by a bar 11 3. Bythe bar 113 being placed on the V-shaped strips 112- and connected tothe bar 111 by a screw 114 at each end, the strips 112 will be held inengagement with the bar 111 so thatv they can be readily detached fromthe roller and the bar 113 will prevent them from coming apart. The bars111 and 113 are located in the grooves 109 the grooves being of such adepth that the outward edge of the bars 111 will be in alignment withthe outer projecting end of the 115 is placed on the ends of said rollerit will securely hold the bars 111 and their connections in position.The strips 112 are constructed so that when they are in engagement withthe roller they will radiate from said roller and form a brush. 0

116 indicates a seat which is located on the floor 15 adjacent the rearend of the sweeper and in such a position that the operator will havefree access to the levers.

The operation is as follows: By the sweeper moving, forward and thetraction wheels 2 turning in the direction indicated by the arrow inFig. 1, they will rotate the shaft 3 which will rotate the bevel-gearwheels 19 and 1 20. The operation of both brushes being the same I willdescribe the operation of but one. The side gear wheel 39 meshes withthe bevel gear wheel 20, and when the bevel gear wheel 20 rotates itwill also rotate the said gear wheel 39 and by its rotating it willrotate the shaft 40 and the sprocket wheels 65 and 91. The sprocketwheel65 is connected to the sprocket wheel 63 by a sprocket-chain 64. Whenthe sprocket chain 64 is rotated it will rotate the brush 46 in arearward direction which will brush or sweep the dirt from the center ofthe sweeper over in front of the brush 107. The brush 66 is alsoconnected to the shaft 40 by a sprocket chain so that it will rotate ina rearward direction. When it so rotates it will sweep the dust upagainst the curtain 106 with sufficient force that it Will goup throughthe opening 100 into the casing 94 and be carried up onto the endlessconveying belt 37 by the screw conveyor 92, the endless conveying belt,being rotated in a rearward direction by a gear wheel 33 connected tothe shaft 31 carrying a roller 32, upon which the rear end of saidconveying belt'is mounted. The gear wheel 33 meshes with the gear wheel34. When it is desired to throw the brushes 46 and 66 and the endless-conveyer 37 out of gear, the operator moves the lever 26 in therequired direction, which will disengage the bevel gear wheel 22 fromthe side gear wheel 39 and also disengage the gear wheel 34 from thegear Wheel 33. The same means is performed to throw the brush 107- outof gear.

What I claim is-'- 1. In a street sweeper, brushes 66 and 107 located atright angles with each other and under the sweeper, means for raisingand lowering said brushes, means for throwing said brushes in and out ofoperation, an endless belt conveyer located between the adjacent ends ofsaid brushes, screw conveyers mounted in casings and located above saidbrushes, said screw conveyers projecting outward over the endless beltconveyor, and ourtains in combination with said casings to guide thedust thereinto, substantially as set forth.

I 2. A street sweeper constructed with two separate revolving brusheslocated in an angular position with relation to each other, ascreW-conveyer located above each of said brushes, in combination with acylindrical casing having a longitudinal opening in one side thereof, acurtain attached thereto for guiding the sweepings into said. casing,and an endless conveying-belt arranged adjacent the ends of saidscrew-conveyer for elevating the sweepings into an adjacent receptacle,substantially as herein specified.

3. In a street sweeper, the combination with a main frame mounted onwheels of the following elements, to wit: three revoluble brushes 46, 66and 107, said brushes 66 and 107 located at right angles relative toeach other and beneath the edges of the main frame and a suitabledistance apart so as to form a space between their adjacent ends, anendless-conveying-beltlocated in the space between the adjacent ends ofsaid brushes for conveying the sweepings to a receptacle, the revolublebrush 46 located in front of the brushes 66 and 107 and parallel withsaid brush 66 so as to cover the space between the adjacent ends ofsaidbrushes 66 and 107, a cylindrical casing containing a screw-conveyermounted over each of the brushes 66 and 107 for conveying the sweepingsonto the endless conveying-belt, means for raising and lowering each ofsaid brushes and mechanism driven by the traction-wheels for revolvingsaid brushes, all arranged and combined to operate substantially asherein specified.

4. In a street sweeper, aseries of revolving brushes, each of saidbrushes constructed with a longitudinal shaft which projects a distancebeyond each end thereof, a bar, having a slot therein, engaging each endof each of said shafts, the opposite end of said bar pivoted to suitablebearings which are connected to the under side of the main frame, chainsengaging the ends of each of said shafts, and

engaging tilting-bars which are mounted in suitable bearings beneath themain frame of the street sweeper, and are located between the brush andthe main frame and parallel with said brush, a link engaging theadjacent end of each of said tilting-bars, which are connected to thehorizontal portion of an angleiron, which is mounted in bearingsconnected to the upper surface of the floor, the vertical portion of theangle-iron engaged indirectly by a lever for operating the same,substantially as herein specified.

5. In combination with a street sweeper, a series of revoluble brushes66 and 107, said brushes 66 and 107 located at right angles relative toeach other, and a suitable distance apart to form a space between them,the brush 46 located in front of said brushes 66 and 107 and parallelwith said brush 66 in such a position as to cover the space between theadjacent ends of the brushes 66 and 107, a cylindrical casing having alongitudinal opening in its under side, located above and parallel witheach of the brushes 66 and 107,a screwconveyer located in each of saidcasings which is operated by a sprocket-chain mounted on sprocket-wheclscarried by the shaft which carries the screw conveyer and the shaft uponwhich the brush is mounted, a curtain in combination with each of saidcasings for directing the sweepings into said casings, and an endlessconveying-belt located beneath the adjacent ends of the casings whichcarry the screw-conveyers for elevating and discharging the sweepingstherefrom into a receptacle, substantially as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM II. WALLS.

Witnesses:

W. J. SANKEY, E. E. LONGAN.

